Relay.



A. A. ZIEGLERS.

RELAY.

APPLICATION FILED MAY 22, 1915.

Patented Nova M, 1916.

ego

. securing-means.

Specification of Letters Patent.

Patented Notariat, 191e.

l Application led Hay 22, 191.5. Serial No. 29,903.

To aZZwwm t may concern:

-Be it known that I, ALFRED A. ZincLnR, a citizen of the United States, residing at Boston, in the county State of Massachusetts, haveuinvented an improvement in Relays, of which the following isa specification. This invention relates to electro-magnetic for use in relays such as used in connection with railway signaling apparatus, and shown in my applications Serial Nos. 534,932, and 740,775. In

this typey of relay'it -is desirable to .arrange the magnet-cores'in upright 'position on a carrying-plate which forms the top wall of a sealed housing, and to permanently and securely `fasten them to said plate, to provide removable magnet-coils, to provide means for securing the magnet-cores to the 'carrying-plate which are accessible from within the housing to prevent the relay being tampered with, and tol construct the securing-means for the cores so that they will notoccupy a position in the magnetic fields of their poles. In this type or a-pparatus it being desirable to use as small a current as possible for purposes 'of economy, the magnet-cores'have enlarged pole-pieces.

My present invention has for its object the .provision of improved means for conveniently and securely fixing the magnetcores equipped with such pole-pieces to the carrying-plate, whereby the above results may be accomplished.

Referring to the drawings: Figure 1, is a iront elevation of a relay showing one embodiment of my invention. Fig. 2, is a fragmentary sectional view showing my ,im-- Vproved securing-means for the'magnet-cores.

F ig. 3', is an enlarged detail elevation of the Fig. 4 is an enlargedsectional *view of the securing-means.

The carrying-plate of the relay which forms the top wall of a sealed housing is here shown as a two-part element similar to that shown in my application #740,775, it

-comprising'an upper part l, which may-be a slab of insulating material, such `as porcelain, and an under part 6, which may be a metallic plate, the latter being secured to the underside of the former by clampingbolts 7, the nuts of which are countersunk in the plate l, as at 8. The carrying-plate bears anydesired number of upwardlydisposed binding-posts 2, and an uprightly disposed operating-magnet for the relay-conof S'u'olk, in the.

tacts, which latter'are arranged within the sealed housing, as well as the armature of said magnet. The cores M of the magnet are stationarily supported rying-plate and the coils of said magnet are removably placed on said cores, and said cores have enlarged pole-pieces 9. 4The carrying-plate has alined holes through its component parts for the magnet-cores M, so that the pole-pieces '9, thereof will occupy positions within the housing while the main portions thereof extend above the carryingplate to receive upon them the magnet-coils.

two-part carrying-plate is not4 herein l lclaimed, and in so far as some of the fea'- tures of my invention are concerned, a onepart carrying-plate, as shown in my application #534,932, may be employed, but the present invention is more especially designed for use in connection with a. two-part carrying-plate, and l gained by its use in connection therewith.

ln carrying out my invention the metallic plate 6 is formed with threaded holes 10, somewhat larger than the cores 4, therethrough, and in these holes, at the upper side of the plate, or that side adjacent the plate 1, are threaded ring-nuts 11, which are adapted to slip over the cores 4l. rlhese nuts have anged heads l2, arranged in on said cari many advantages are which pass recesses in ,the underside of the platel l.

ach core l is provided with a circumferentiallyopposite the top of the head 12', when the ring-nut l1, is assembled, as described, and the top of said head is out away into the central passage, as at 14e, to form in cooperation with the groove 13, an' annular recess. ln said recess is placed a ring 15 of hard wire or the like, to form an enlargement on the core, this typifying any suitable'kind of abutment adapted to be conveniently associated mit the ring-nut 10 to react against the core for moving said core longitudinally upon turning the nut. Upon the insertion of this ring l5, the ring-nut 11, may be turned backward to a small extent, gagement therewith will draw up the core until its pole-piece 9, snugly engages the under face of the plate, this serving to securely clamp and hold the core to the plate 6. The plate 6, with the cores thus rigidly assembled therewith, may be applied to the upper plate l, and bolted thereto by the bolts 7,' with the cores projecting through said tial groove 13, which is arranged substanwith the core to perplate in operative position. It is be oband having served that not only 1s the described securingmeans of ,simple and effective character adapted for the quick assembling of theV parts, but there is no interference with the magnetic field of the pole, and furthermore, the securing-means is concealed between the two-parts of the carrying plate, andtherefore very inaccessible, and only accessible when the housing and metallic plate are removed.

The invention. is not to be understood as restricted to thelspecific form shown since manifestly equivalents as to details thereof may be adopted without departing from the essential attributes, and I, therefore, desire the present embodiment to be considered as ementially illustrative.

1. `In a relay., a carrying-plate, an electromagnet core extended and having at its inner end an enlarged polepiece, a ring-nut adjustably secured to said plate, and arranged on said core, and removable means arranged on said core, above said nut, against which said nut reacts to adjust said core longitudinally to draw the pole-piece into engagement with' the plate, and thereby clamp the core stationarily to the plate.

2. In a r'elay, a carrying-plate, an electroniagnct core'extended through said plate at its inner end an. enlarged pole-piece, removable means arranged on the core above the plate and adapted to project therefrom to form a shoulder, and an annular element arranged on the core between the shoulder and the plate, said annular element and said plate being provided with interengaging means through said plate,

for moving them rela'- tive to each other so as .to move the 'core longitudinally to draw the pole-piece into engagement with the plate, and therebyclamp the core stationarily to the plate.

3. Ina relay, a carrying-plate, an electromagnet core extended through said platevandhaving at its'inner end an enlarged pole-piece, a ring-nut threaded in said plate and arranged on said core, and an insertible backing-member adapted to be applied to said core to permit' said nut to react thereagainst for clamping said core to said plate.

4. In a relay, a carrying-plate, an electromagnet core extended through said plate and having at its inner end an enlarged polepiece, a ring-nut threaded in said plate and arranged on said core, said core and said nut having cooperative. grooves to form an' annular recess, and -an element arranged in said recess to .serve .as a backing against which said nut may react for clamping said core to said plate.

5. In a relay, a carrying-plate, an electromagnet core extended throughv said plate and having at its inner end an enlarged pole-piece, a ring-nut threaded in said plate and arranged on said core, said nut having an enlarged head,. and said core being formed l with an annular groove substantially opposite the top of said nut, and a ring-member arranged in said groove to serve as a backing against which said nut vmay react.4

In testimony whereof, Ihave signed my name to this specific-ation, in' the presence of 175 two subscribing witnesses.

ALFRED A. 'ZIEGLER Witnesses:

B. J. Noires, H. B. DAvrs. 

